4 files changed, 18 insertions, 28 deletions
diff --git a/packages/tui/internal/app/constants.go b/packages/tui/internal/app/constants.go
deleted file mode 100644
index 0d37833f5..000000000
--- a/packages/tui/internal/app/constants.go
+++ /dev/null
@@ -1,4 +0,0 @@
-package app
-
-const MAX_CONTAINER_WIDTH = 86
-const EDIT_DIFF_MAX_WIDTH = 180
diff --git a/packages/tui/internal/components/chat/editor.go b/packages/tui/internal/components/chat/editor.go
index 687553342..ef129765f 100644
--- a/packages/tui/internal/components/chat/editor.go
+++ b/packages/tui/internal/components/chat/editor.go
@@ -64,10 +64,7 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	switch msg := msg.(type) {
 	case tea.WindowSizeMsg:
-		m.width = min(msg.Width-4, app.MAX_CONTAINER_WIDTH)
-		if m.app.Config.Layout == opencode.LayoutConfigStretch {
-			m.width = msg.Width - 4
-		}
+		m.width = msg.Width - 4
 		return m, nil
 	case spinner.TickMsg:
 		m.spinner, cmd = m.spinner.Update(msg)
@@ -180,6 +177,11 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 }
 
 func (m *editorComponent) Content() string {
+	width := m.width
+	if m.app.Session.ID == "" {
+		width = min(width, 80)
+	}
+
 	t := theme.CurrentTheme()
 	base := styles.NewStyle().Foreground(t.Text()).Background(t.Background()).Render
 	muted := styles.NewStyle().Foreground(t.TextMuted()).Background(t.Background()).Render
@@ -188,7 +190,7 @@ func (m *editorComponent) Content() string {
 		Bold(true)
 	prompt := promptStyle.Render(">")
 
-	m.textarea.SetWidth(m.width - 6)
+	m.textarea.SetWidth(width - 6)
 	textarea := lipgloss.JoinHorizontal(
 		lipgloss.Top,
 		prompt,
@@ -200,7 +202,7 @@ func (m *editorComponent) Content() string {
 	}
 	textarea = styles.NewStyle().
 		Background(t.BackgroundElement()).
-		Width(m.width).
+		Width(width).
 		PaddingTop(1).
 		PaddingBottom(1).
 		BorderStyle(lipgloss.ThickBorder()).
@@ -236,7 +238,7 @@ func (m *editorComponent) Content() string {
 		model = muted(m.app.Provider.Name) + base(" "+m.app.Model.Name)
 	}
 
-	space := m.width - 2 - lipgloss.Width(model) - lipgloss.Width(hint)
+	space := width - 2 - lipgloss.Width(model) - lipgloss.Width(hint)
 	spacer := styles.NewStyle().Background(t.Background()).Width(space).Render("")
 
 	info := hint + spacer + model
@@ -247,9 +249,14 @@ func (m *editorComponent) Content() string {
 }
 
 func (m *editorComponent) View() string {
+	width := m.width
+	if m.app.Session.ID == "" {
+		width = min(width, 80)
+	}
+
 	if m.Lines() > 1 {
 		return lipgloss.Place(
-			m.width,
+			width,
 			5,
 			lipgloss.Center,
 			lipgloss.Center,
diff --git a/packages/tui/internal/components/chat/messages.go b/packages/tui/internal/components/chat/messages.go
index bf0c4d8f6..acc7b8879 100644
--- a/packages/tui/internal/components/chat/messages.go
+++ b/packages/tui/internal/components/chat/messages.go
@@ -146,10 +146,7 @@ func (m *messagesComponent) renderView() tea.Cmd {
 
 		orphanedToolCalls := make([]opencode.ToolPart, 0)
 
-		width := min(m.width, app.MAX_CONTAINER_WIDTH)
-		if m.app.Config.Layout == opencode.LayoutConfigStretch {
-			width = m.width
-		}
+		width := m.width // always use full width
 
 		for _, message := range m.app.Messages {
 			var content string
@@ -320,13 +317,6 @@ func (m *messagesComponent) renderView() tea.Cmd {
 							continue
 						}
 
-						width := width
-						if m.app.Config.Layout == opencode.LayoutConfigAuto &&
-							part.Tool == "edit" &&
-							part.State.Error == "" {
-							width = min(m.width, app.EDIT_DIFF_MAX_WIDTH)
-						}
-
 						if part.State.Status == opencode.ToolPartStateStatusCompleted || part.State.Status == opencode.ToolPartStateStatusError {
 							key := m.cache.GenerateKey(casted.ID,
 								part.ID,
@@ -419,10 +409,7 @@ func (m *messagesComponent) renderHeader() string {
 		return ""
 	}
 
-	headerWidth := min(m.width, app.MAX_CONTAINER_WIDTH)
-	if m.app.Config.Layout == opencode.LayoutConfigStretch {
-		headerWidth = m.width
-	}
+	headerWidth := m.width
 
 	t := theme.CurrentTheme()
 	base := styles.NewStyle().Foreground(t.Text()).Background(t.Background()).Render
diff --git a/packages/tui/internal/tui/tui.go b/packages/tui/internal/tui/tui.go
index b201a9086..a81c1a6ba 100644
--- a/packages/tui/internal/tui/tui.go
+++ b/packages/tui/internal/tui/tui.go
@@ -439,7 +439,7 @@ func (a appModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case tea.WindowSizeMsg:
 		msg.Height -= 2 // Make space for the status bar
 		a.width, a.height = msg.Width, msg.Height
-		container := min(a.width, app.MAX_CONTAINER_WIDTH)
+		container := min(a.width, 86)
 		layout.Current = &layout.LayoutInfo{
 			Viewport: layout.Dimensions{
 				Width:  a.width,